Taehee confesses that he's falling in love at first sight with Jeongwon, His senior from the same department. However, Jeongwon affectionately tells him that he already has a long-time lover, Geon. However, he also said that He's a polyamorous person. That's how the strange romances of Jeongwon-Geon and Jeongwon-Taehee began. Although Taehee is happy with every moment he spends with Jeongwon, But for some reason, Taehee keeps worrying about Geon...